This quote shows also that he's probably not that young since he knows about the time sharing computers in the nineties. And indeed a great quote. Clearly showing the trust deficiency in the current money system.
He's not that young, and he's been writing about economic theory for quite some time. You can see his blog here: http://unenumerated.blogspot.com
In 1993, he also described how to maintain a pseudonomous identity online, which is seemingly working pretty well for him to date: http://cypherpunks.venona.com/date/1993/10/msg00759.html